Rahm, Dianne
Thomson wadsworth, 2004
Buku Teks
CBO, 1988
Buku Teks
Mehren, Arthur Taylor von
Kluwer law and Taxation Publishers, 1988
Buku Teks
Whitaker, Arthur P.
Harvard University Press, 1948
Buku Teks
Hurst, James Willard
University of Michigan Law School, 1960
Buku Teks